/Engine/Plugins/Runtime/GeometryCache/Source/GeometryCache/Classes/GeometryCacheComponent.h
Set the color, used when overriding the wireframe color is enabled.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Components|GeometryCache") void SetWireframeOverrideColor ( const [FLinearColor](API\Runtime\Core\Math\FLinearColor) Color )